Automobile dust cover skeleton sealing structure

Abstract

The utility model discloses a kind of automobile dust cover skeleton sealing structure, including bearing seat, bearing rod head and sealing sleeve, wherein, bearing rod head bottom end is equipped with ball head, ball head is rotatably arranged in the sliding sleeve detachably installed in bearing seat;Bearing seat side is equipped with cover, cover is connected with bearing seat by lock lug and lock pin, forms spacing and closed structure;Sealing sleeve two ends are respectively set in bearing and the outside of bearing rod head, and are fixed by clamping by clamp.The sliding sleeve is sleeve structure with longitudinal slot, and the sealing sleeve is flexible bellows structure.The structure has excellent dustproof sealing performance, structural stability and maintainability, and is suitable for sealing protection of ball head connecting components in vehicle steering, suspension or transmission system.The utility model has the advantages of compact structure, reliable sealing, simple assembly, long service life and the like.

Description

Technical Field

[0001] This utility model relates to the field of automotive component sealing technology, specifically to a sealing structure for an automotive dust cover skeleton. Background Technology

[0002] Automotive dust cover skeleton sealing structures are widely used in vehicle steering, suspension, and transmission systems. They primarily protect moving parts such as ball joints, rotating bearings, and transmission joints from the intrusion of dust, moisture, mud, and other foreign matter, extending the service life of critical moving components while maintaining a stable lubrication environment and reducing lubricant loss. In practical applications, dust covers also need to possess a certain degree of flexibility to accommodate the axial and radial relative movements of components during operation.

[0003] Traditional dust cover frame sealing structures typically consist of the following parts: frame components, sealing sleeves, sliding contact structures, and clamps. The frame components are mostly made of steel rings or engineering plastics, used to support the sealing sleeve and fix it to the stationary end or moving parts of the vehicle; the sealing sleeve is usually made of rubber or thermoplastic elastomer material, connected to a bearing at one end and a ball joint at the other, possessing a certain degree of elasticity and extensibility; in structures involving ball joint rotation, components such as sliding sleeves and retaining rings are also included to allow for freedom of movement; the connection is mostly achieved through metal clamps for compression and fixation.

[0004] However, existing structures generally suffer from the following problems:

[0005] Lack of effective sealing structure: Most dust cover structures only restrict the separation of the connecting structure through limiting structure, and rely solely on the sealing sleeve body and clamp to form a seal. The sealing boundary is exposed, and the sliding cavity is easily contaminated.

[0006] No lateral limiting design: Traditional structures do not have mechanical enclosures or limiting components. The sliding sleeve and ball head are positioned by friction alone. During operation, axial movement, displacement or even dislocation can easily occur, affecting the stability of the mechanism.

[0007] Assembly and maintenance are inconvenient: The structure is mostly one-time snap-fit ​​or press-fit, lacking detachable structural components, which makes it inconvenient for later inspection, replacement or maintenance.

[0008] Therefore, there is an urgent need for a dust cover skeleton sealing structure with mechanical limiting, detachable sealing, reliable sealing and flexible fit functions to solve the above-mentioned technical problems such as unreliable sealing, loose parts and difficult maintenance, and improve the durability and reliability of the whole vehicle structure. Utility Model Content

[0009] This utility model relates to the field of automotive component sealing structure technology, specifically to an automotive dust cover skeleton sealing structure, applicable to vehicle steering system, suspension system or transmission system, used to provide sealing protection, structural support and limiting functions for moving parts such as ball joints, with advantages such as good sealing performance, stable structure, convenient assembly and strong maintainability.

[0010] This utility model aims to solve the technical problems of poor sealing reliability, lack of effective limiting, complex assembly and difficult maintenance of existing dust cover structures, and proposes a dust cover skeleton sealing solution with compact structure, clear function and detachable installation.

[0011] The structure generally includes components such as a bearing seat, bearing head, sliding sleeve, cover, locking lug, locking pin, sealing sleeve, and clamp. The sliding sleeve and ball head cooperate to form a rotatable connection. The sealing sleeve is wrapped around the outside and fixed with clamps to achieve sealing protection. The cover limits the position of the sliding sleeve through the locking lug and locking pin and closes the side opening of the structure, improving the overall operational stability and sealing reliability of the machine.

[0012] In a preferred example, the bottom end of the support rod head is provided with a ball head, and a sliding sleeve is detachably installed on the inner side of the support seat, with the ball head rotatably disposed within the sliding sleeve.

[0013] Specifically, this structure allows the bearing head to rotate freely in multiple angular directions, adapting to the dynamic operating conditions of the vehicle's suspension or steering system. At the same time, the sliding sleeve provides stable support and controls the range of motion of the ball joint, preventing loosening of the fit or structural interference.

[0014] In a preferred example, the cover is disposed at the side opening of the bearing, and a locking lug is provided on one side of the bearing. The cover is locked to the surface of the bearing by a locking pin disposed inside the locking lug.

[0015] Specifically, the structure seals the sliding sleeve and the ball head cavity with a cover, and uses a locking lug and a locking pin to form a mechanical lock, preventing the sliding sleeve from falling off due to vibration or axial force during use, thus effectively improving structural stability and sealing continuity.

[0016] In a preferred example, the two ends of the sealing sleeve are respectively fitted onto the surfaces of the bearing seat and the bearing rod head, and are clamped and fixed by clamps.

[0017] Specifically, the flexible sealing structure can expand and contract with the movement of the support rod head, continuously maintaining a dustproof and sealed state. The two ends of the interface are clamped by metal clamps to prevent the sealing sleeve from loosening and falling off during high-frequency vibration or long-term use, thereby improving service life and sealing effect.

[0018] In a preferred example, the sliding sleeve is a sleeve-shaped structure, and its cylinder has several longitudinal slots along the axial direction.

[0019] Specifically, the sliding sleeve has a certain elastic deformation capacity in the radial direction through the slotted structure, which enhances the fit performance of the ball head, alleviates the fluctuation of the mating clearance, and improves the reliability of the structure.

[0020] In a preferred example, the sealing sleeve is a flexible corrugated structure. The corrugated structure allows it to freely expand, contract, or deform during multi-angle movements, thereby ensuring that the sealing sleeve maintains a good seal during dynamic operation and preventing leakage, cracks, or breakage.

[0021] In a preferred embodiment, the clamp is a metal ring structure that clamps the connection of the sealing sleeve through radial contraction. Specifically, this structure is securely installed, has strong resistance to pull-out, and can maintain the tightness of the sealing interface for a long time under complex working conditions, preventing the seal from loosening or falling off.

[0022] In a preferred embodiment, the cover is mounted on the bearing via an interference fit or a snap-fit ​​structure to limit the position of the sliding sleeve and the ball head. This structure enables precise positioning and limiting protection of the sliding sleeve, further preventing displacement of the sliding sleeve assembly under external forces and enhancing the overall operational safety of the machine.

[0023] In a preferred embodiment, the locking lug and the bearing are integrally formed. This integrated structure improves assembly rigidity and overall manufacturing consistency, preventing part misalignment or loosening, and contributing to the overall stability and reliability of the dust cover assembly.

[0024] In summary, this utility model, through the combination of a sliding fit structure and a sealing and limiting design, achieves a balance between support, sealing, and mobility. It is suitable for various dynamic connection scenarios and possesses comprehensive advantages such as simple structure, excellent sealing effect, strong shock resistance, and convenient maintenance. It demonstrates significant technological advancement and broad industrial application prospects. The beneficial effects achieved by this utility model are as follows:

[0025] 1. In this utility model, by setting a mechanical limiting and sealing structure composed of a cover, a locking lug, and a locking pin, not only is the sliding sleeve and ball head effectively sealed to prevent dust, water vapor, and other contaminants from entering the sliding cavity, but the axial limiting capability of the structure is also enhanced, avoiding the problem of sliding sleeve easy to move or displace in traditional structures, and improving operational stability and sealing reliability.

[0026] 2. In this utility model, a detachable cover is used in conjunction with a flexible sealing sleeve and a clamp for connection. The overall structure is easy to assemble and accurately positioned. It can be quickly disassembled, maintained and replaced in the later stage, which greatly improves maintenance efficiency, reduces the maintenance cost of the whole vehicle, and overcomes the problems of difficult maintenance and replacement of traditional structures. Attached Figure Description

[0027] Figure 1This is a schematic diagram of the overall structure of one embodiment of the present utility model;

[0028] Figure 2 This is an exploded structural diagram of one embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of the cross-sectional structure of the bearing seat and the bearing head according to an embodiment of the present invention;

[0030] Figure 4 This is a schematic diagram of the support head and sliding sleeve structure according to one embodiment of the present utility model.

[0031] Figure label:

[0032] 100, bearing seat; 110, cover; 120, locking lug; 121, locking pin; 200, bearing head; 210, ball head; 220, sliding sleeve; 300, sealing sleeve; 310, clamp. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0034] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0035] The following describes, with reference to the accompanying drawings, some embodiments of the present invention, providing a sealing structure for an automotive dust cover frame.

[0036] Combination Figures 1-4 As shown, this utility model provides a sealing structure for an automotive dust cover frame, including a support 100, a support rod head 200, and a sealing sleeve 300. The support rod head 200 has a ball head 210 at its bottom end. A sliding sleeve 220 is detachably installed on the inner side of the support 100. The ball head 210 is rotatably disposed inside the sliding sleeve 220, allowing the support rod head 200 to rotate freely relative to the support 100 in multiple directions. The sliding sleeve 220 is a hollow cylindrical structure used to form an enclosing cavity for the ball head 210 and restrict its range of motion.

[0037] The support 100 has a mounting opening on its side for mounting the sliding sleeve 220 and the ball head 210 assembly. To close this mounting opening and provide structural limiting, the structure further includes a cover 110, which can be installed at the side opening of the support 100. For reliable locking, a locking lug 120 is provided on one side of the support 100. A locking pin 121 is installed on the cover 110 and the outside of the support 100 through a through hole in the locking lug 120. The locking pin 121 passes through the locking lug 120 and the cover 110 to form a locking mechanism, so that the cover 110 is securely mounted on the support 100 and effectively limits and closes the sliding sleeve 220 and the ball head 210 assembly.

[0038] To achieve a dustproof and sealing effect, the structure also includes a flexible sealing sleeve 300. The two ends of the sealing sleeve 300 are respectively fitted onto the outer wall of the bearing seat 100 and the outer surface of the bearing rod head 200. Specifically, one end of the sealing sleeve 300 covers the external sealing structure of the bearing seat 100, and the other end is fitted onto the rod portion of the bearing rod head 200. To prevent the sealing sleeve 300 from loosening or slipping during use, metal clamps 310 are provided at both ends of the sealing sleeve 300. The clamps 310 use a radial contraction method to clamp the joint between the sealing sleeve 300 and the corresponding connecting part, thereby forming a reliable sealing interface.

[0039] Furthermore, the sliding sleeve 220 is a sleeve-shaped structure with several longitudinal slots along the axial direction of its cylinder body. The slots penetrate the cylinder wall to improve the elastic deformation capacity of the sliding sleeve 220 in the radial direction, so that it can better fit the outer surface of the ball head 210 and maintain a relatively stable fit during the rotation of the ball head 210, effectively reducing vibration and fit gap, and improving the working reliability of the structure.

[0040] Furthermore, the sealing sleeve 300 adopts a flexible corrugated structure design, which allows it to deform controllably in the axial and radial directions, thereby adapting to the multi-angle swing and small displacement of the support rod head 200 during vehicle operation, maintaining good sealing performance without affecting the free movement of the support rod head 200.

[0041] Furthermore, the clamp 310 is made of metal and has a ring-shaped structure. It can be radially pressed by external tools to firmly clamp the connection between the sealing sleeve 300 and the bearing seat 100 or the bearing rod head 200, thereby preventing the sealing sleeve from falling off or dust from entering due to structural loosening.

[0042] Furthermore, after the cover 110 is installed at the opening of the bearing 100, it can axially limit the sliding sleeve 220 and the ball head 210, preventing the above components from axially displacing or falling off due to vibration or force during use. The cover 110 and the bearing 100 can be initially connected through interference fit or snap-fit ​​structure, and a second locking is formed by the locking lug 120 and the locking pin 121, which enhances the stability and protective performance of the structure.

[0043] Furthermore, to improve overall strength and installation consistency, the locking lug 120 and the bearing 100 are integrally formed. The locking lug 120 is located on the side wall of the bearing 100 and forms a locking channel with the cover 110. After the locking pin 121 is inserted, the cover 110 is firmly fixed in place, effectively preventing the cover from loosening, slipping, or shifting due to vibration.

[0044] In summary, this utility model uses the sliding sleeve 220 to form a rotatable enclosure for the ball head 210, the sealing sleeve 300 and the clamp 310 to achieve external dustproof sealing, and the cover 110, lock lug 120 and lock pin 121 to form mechanical limiting and closed protection. This not only improves the overall sealing and reliability of the structure, but also facilitates assembly and maintenance, and is suitable for the installation needs of various vehicle structures.

[0045] Working principle and usage process of this utility model:

[0046] During vehicle operation, when the structural components connected to the support head 200 undergo relative movement, the ball head 210 rotates smoothly within the sliding sleeve 220. Due to its longitudinal slotted design, the sliding sleeve 220 provides excellent radial elastic fit, ensuring stable support for the ball head 210. Simultaneously, the sealing sleeve 300 deforms accordingly with changes in angle and displacement caused by the movement, maintaining the sealing and flexibility of the entire structure and preventing external dust, moisture, mud, and other foreign matter from entering the sliding cavity, ensuring that key moving components such as the ball head 210 and the sliding sleeve 220 are in good working condition.

[0047] During structural maintenance or replacement, operators can remove the locking pin 121 and open the cover 110 to quickly disassemble and replace the sliding sleeve 220 and ball head 210 components; the sealing sleeve 300 is also easily replaced by clamping the connection with the clamp 310, improving the maintainability and efficiency of the whole machine.

[0048] In summary, this utility model, through the coordinated operation of components such as the sliding sleeve 220, the cover 110, the locking lug 120, the locking pin 121, the sealing sleeve 300, and the clamp 310, achieves stable support, effective positioning, and reliable sealing of the ball head structure, and has good performance and industrial application prospects.

[0049] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0050] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A sealing structure for a car dust cover frame, characterized in that, Includes bearing seat (100), bearing head (200) and sealing sleeve (300); The bottom end of the support head (200) is provided with a ball head (210), and a sliding sleeve (220) is detachably installed on the inner side of the support (100). The ball head (210) is rotatably disposed in the sliding sleeve (220). A cover (110) is provided at the side opening of the bearing (100), and a lock lug (120) is provided on one side of the bearing (100). The cover (110) and the surface of the bearing (100) form a locking mechanism for the cover (110) by arranging a locking pin (121) inside the lock lug (120). The two ends of the sealing sleeve (300) are respectively fitted onto the surface of the bearing seat (100) and the bearing rod head (200), and are clamped and fixed by the clamp (310).

2. The automotive dust cover frame sealing structure according to claim 1, characterized in that, The sliding sleeve (220) is a sleeve-shaped structure with several longitudinal slots along the axial direction to increase its elastic deformation capacity in the radial direction, so as to adapt to the movement of the ball head (210) of the support rod head (200).

3. The automotive dust cover frame sealing structure according to claim 1, characterized in that, The sealing sleeve (300) has a flexible corrugated structure to accommodate the movement of the support head (200) in multiple directions while maintaining a sealing effect.

4. The sealing structure of the automotive dust cover frame according to claim 1, characterized in that, The clamp (310) is a metal ring structure that clamps the connection between the sealing sleeve (300) and the bearing seat (100) and the bearing rod head (200) by radial contraction.

5. The sealing structure of the automotive dust cover frame according to claim 1, characterized in that, The cover (110) is installed on the bearing (100) by interference fit or snap-fit ​​structure to limit the position of the sliding sleeve (220) and the ball head (210).

6. The sealing structure of the automotive dust cover frame according to claim 1, characterized in that, The lock lug (120) and the support (100) are integrally formed, which enhances the stability of the overall installation.

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